scholarly journals Heavy metal concentrations and sediment quality of a cage farm on Lake Volta, Ghana

2020 ◽  
Vol 51 (5) ◽  
pp. 2041-2051
Author(s):  
Anthony Yaw Karikari ◽  
Ruby Asmah ◽  
William Wilson Anku ◽  
Steve Amisah ◽  
Nelson Wheatson Agbo ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sediment Quality ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

scholarly journals HEAVY METAL CONCENTRATIONS IN SEDIMENT CORES FROM DIFFERENT MANGROVE FORESTS IN DA LOC COMMUNE, HAU LOC DISTRICT, THANH HOA PROVINCE, VIETNAM

2018 ◽  
Vol 34 (3) ◽  
Author(s):  
Minh Tran Thi
Keyword(s):  
Heavy Metal ◽  
Mangrove Forest ◽  
Sediment Cores ◽  
Sediment Quality ◽  
Organic Matter Content ◽  
Depositional Environments ◽  
Silty Sand ◽  
Mangrove Forests ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

In order to clarify heavy metal concentration profiles in different mangrove forest ages, four sediment cores (up to 100 cm in depth) were collected and tested for their physicochemical characteristics (pH, Eh, organic matters and grain size) and heavy metal concentrations. Results showed that mangrove sediments were composed mainly of sandy silt, silty sand, silt, sandy mud and mud. The average mud content in the sediment cores continuously increased with mangrove forest ages from one, nine, nineteen and twenty years old, whereas the mud content highly fluctuated with the core depth. pH, Eh and organic matter content implied that the sedimentary depositional environments were classified as weak alkaline and anaerobic. The Cu and Zn concentrations in the sediment cores from the intertidal zone exceeded the TEL values in Canadian Interim Marine Sediment Quality Guideline (ISQGs) values, while, Pb concentration exceeded the PEL level. When compared with National Technical Regulation on Sediment Quality QCVN43:2012/BTNMT, sediment samples were polluted by Cu and Pb.

scholarly journals Concentration of heavy metals in the drinking water of Kut city - Iraq and their impact on health

2021 ◽  
Vol 2114 (1) ◽  
pp. 012050
Author(s):  
Mohammad Yahya R Al-Yasiri ◽  
Hadi Dwaich Z. Al-Attabi
Keyword(s):  
Heavy Metal ◽  
Drinking Water ◽  
Water Samples ◽  
World Health ◽  
Metal Concentrations ◽  
Supply Networks ◽  
Heavy Metal Concentrations ◽  
Health Organization ◽  
The City

Abstract The quality of drinking water is related to the state of the water supply networks, pollution, and contamination of drinking water with contaminants of both anthropogenic and natural origin. Water samples were collected from 22 different waterworks in Kut, Iraq, and heavy metal concentrations (Pb, Ni, and Zn) were analyzed. In various parts of the city, 22 sampling sites were pre-defined. The results indicated that heavy metal concentrations in water samples did not surpass WHO guidelines (World Health Organization).

scholarly journals A Multi-Index Analysis Approach to Heavy Metal Pollution Assessment in River Sediments in the Ponce Enríquez Area, Ecuador

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 590 ◽  
Author(s):  
Alby Aguilar Pesantes ◽  
Elizabeth Peña Carpio ◽  
Tomas Vitvar ◽  
Manuel María Mahamud López ◽  
Juan Menéndez-Aguado
Keyword(s):  
Heavy Metal ◽  
Sediment Quality ◽  
Contamination Factor ◽  
Small Scale ◽  
Mining Operations ◽  
Metal Concentrations ◽  
Geochemical Composition ◽  
Multi Index ◽  
Heavy Metal Concentrations ◽  
Subsurface Sediments

The area of Ponce Enríquez, Southern Ecuador, is one of the most important artisanal and small scale gold mining (ASGM) areas in the country, where informal mining operations can be found using amalgamation technique, even though it has been prohibited since 2010. Considering the potential impact of these mining operations, the present research focused on heavy metal pollutants in subsurface sediments at 214 sampling locations from several detailed sampling campaigns in the rivers Fermín, Fermín Norte, Guanache, Villa, and Siete. Four parameters were calculated to evaluate the geochemical composition of the river sediment and heavy metal concentrations: The enrichment factor (EF), the geo-accumulation index (Igeo), the contamination factor (Cf) and the pollution load index (PLI). The analyzed elements were Cu, Pb, Zn, Ni, As, Cd, Sb, Sr, and Hg. Due to the lack of standards for pollution levels in sediments in Ecuador, Canadian guidelines were used as interim sediment quality guidelines (ISQG) in this research for comparison with the obtained results in subsurface sediments. The multi-index geochemical analysis indicated elevated heavy metal concentrations in all subsurface sediments in the studied river ecosystems.

scholarly journals Physicochemical Analysis of Water Quality of Brook Kuruçay

2016 ◽  
Vol 4 (11) ◽  
pp. 991 ◽  
Author(s):  
Ekrem Mutlu ◽  
Arzu Aydın Uncumusaoğlu
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Surface Water ◽  
Water Samples ◽  
Oxygen Demand ◽  
Total Alkalinity ◽  
Aquatic Life ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

In this study, through the analyses of water samples taken from 9 stations on the brook between July 2012 and June 2013, we aimed to determine the monthly and seasonal changes in water quality parameters of Brook Kuruçay, to determine the water quality properties, to reveal the pollution problems, to determine the suitability level in terms of aquatic life and to classify the quality of water in accordance with Surface Water Quality Management Regulation’s Inland Surface Water Classes criteria. The study area is located southeast of the Hafik District of Sivas city and the altitude is 2608 m. The water samples were collected from 9 stations established on the brook, and some physicochemical parameters and heavy metal concentrations were analyzed in water samples. The cleaning and maintenance of all of the equipment, land-type measurement tools, and glass sampling containers to be used in sampling were made 1 day before sampling. Sampling tubes were immersed into 15 cm below the water surface for taking water samples. Heavy metal concentrations were determined in the Sivas Provincial Control Laboratory in the same day with sampling (within 5 hours). The total alkalinity, total hardness, ammonium nitrogen, nitrite, nitrate, ammonium azote, phosphate, sulfite, sulfate, chloride, sodium, potassium, suspended solid matter (SSM), chemical oxygen demand (COD), biological oxygen demand (BOD), calcium, magnesium, ferrous, lead, copper, zinc, nickel, mercury and cadmium analyses of water samples were performed. As a result of the analyses, it was determined that, since Brook Kuruçay falls into the water resource class, which is the most sensitive to pollution, the water quality of the brook should be monitored regularly.

Possibilities to improve the quality of wastewater sludges

2001 ◽  
Vol 44 (10) ◽  
pp. 19-26 ◽  
Author(s):  
P. Balmér
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Wastewater ◽  
Storm Water ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
The Past ◽  
Potential Improvement ◽  
Wastewater Sludges

Falling heavy metal concentrations in wastewater sludges are an indicator of the improvements in sludge quality achieved over the past thirty years. Studies of the sources of heavy metals in wastewater sludges, particularly the loads introduced by domestic and industrial wastewater and storm water, show the potential improvement that may still be made.

Heavy metal concentrations in roadside soils of Lithuania's highways

Geologija ◽  
2008 ◽  
Vol 50 (4) ◽  
pp. 237-245 ◽  
Author(s):  
Audronė Jankaitė ◽  
Pranas Baltrėnas ◽  
Agnė Kazlauskienė
Keyword(s):  
Heavy Metal ◽  
Roadside Soils ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations
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